Mechanism for throwing sprays of oil into furnaces.



PatenteQMar. 27,1900.-

j R. BBUWNE. MECHANISM FOR THBOWING SPRAYS OF OIL INTO FURNACES.

. (Application Med Apr. 8, 1897.) (No llodeL) q new 3 itnesses;

Inventor.

4,, Atto'rney.

wn-nhi1. mmumsmnmua MECHANISM FOR THROWING s v UNITED -'STnu ts'j" PATENT? OFFICE.

jr-HoMAs n. B owNE, or ALTCONA, PENNSYLVANIA} PRAYS OF on. IN'Tb ,F'U R Ao srncrmcn'rxon forming part of Letters latent No. se ate, dated March 27, 1900.

Application filed April 8, 1397.

invented a certain new and useful Improvement in Mechanism for Throwing Sprays of Oil into Furnaces, of which the following is a true and exact description, referencebeing bad to the accompanying drawings, which forma part thereof.

My invention relates to the construction of mechanism adapted to throw a spray of oil,

preferably mixed with'steam, into furnaces, andhas for its object particularly to provide the oil-spraying device with a small boiler from'which it can receive an impelling-jet of steam, a part of which extends intothe furnace immediately above the oil-jet, so as to be heated thereby. I have also made the construction of the receiving-nozzle of the oil-jet and of the spraying device itself so as to ma terially increase the efliciency, while at the same time simplifying the construction of the various parts of the apparatus.

The nature of my improvementswill be best 3 nnderstoodas described in connection with the drawings in which they are illustrated and in which- I Figure 1 is a vertical section taken through the boiler, the spraying device, the receivingnozzle, and, a wall of the furnace. Fig. 2-is a cross-sectional view taken on the section-line 1 1 of Fig.1; Fig. 3, a cross seotional view taken on the section-line 2 2 of Fig. 1;, 'and Fig. 4 an enlarged viewof one member of the oil-spraying meohanisrm A is the wall of the furnace, A indicating an iron front plate upon the outside .of the wall, and A a perforation formed in the wall. for the admission of the oil-jet. B is the receiving-nozzle ofthe jet, preferably madeot' cast-iron and provided with a separable terminal portion b, which can be renewed from time to time as it burns out.-

The perforation of the receiving-nozzle B is formed with an outer converging portion 1) and an inner diverging portion b, the 'juuc tion of the two portions forming the most contracted part of the nozzle perforationor passage. The portion 12' should be shaped to corof the jet.

Serial No. 613L248. No model.)

Air-passages B are preferably formed in the walls of the nozzle B, through a which air may be drawn in by the jet. Such passages'enter around thefmargin of the portion I) and open into the contracted portion of the nozzle, as indicated by the apertures b in Fig. 1, near the point wherethe converging and diverging surfaces 1) and-b meet each other, this being the point where the'vacuum created. by the jet thrown into the nozzle is greatest and the consequent suction through the small air-passages B resulting in an energetic impingement of the air drawn through 6 5 them into the oil-jet, so that said .airmixes freely with the oil-spray in the divergingportion of thenozzle. The means for furnishing steam to the oiljspraying fixture .consists partly of a'steam-box D, sustained outside the heatingchamber of the furnace, and partly of steaming-tubes E, projected from the innerend of such steam-box into the furnace, where theyare exposed to the heat generated by the burner. The steam-box is preferably made of a casting integral with the receiving-nozzle B, and B indicate bolts holding the nozzle and the steam-box upon the v front plate A of the furnace. v The steaming-tubes E project through the walls of the furnace immediately above the receiving-nozzle B, where they are exposedto the heat of the burning gases; ,.l?referabl these tubes are provided with partitions so as'to facilitate the circulation of water and the delivery of steam into the steameb'ox. As shown, the steam-box is also provided with'an opening in its bottom at D and an opening in its top at D immediately above the openingD while a valve-opening is made 0 in the'steam-box at D, approximately at the intended water-line. This last opening will be closed by a stop-cock andis intended for use particularly in-starting the apparatus and as a means for drawing off anysurplus of wa- .ter above the water-line. l F in the design shown is a double conduit having in'it a passage F opening at the top of the-boiler and extending down, as shown; also, a passage F opening at f near the bottom of the boiler, and at f, near the top of the boiler and extending'up through the conduit F, as shown. This conduitF has a shoulder respond substantially wi h the natural form .F, which rests upon the top of the opening ii; Da -while its lower .end passes thro'ugh the opening Diand is held'in place by the condui'tthf; which serewsupon the-lowerend of the conduit}? and forms acontinuation "of its {passage F. i The passage F merges into a cylindrical passageFj at the top,,into which,

at f; opens a feed-waterpassage F while a regulating-valve, G fits tightly in the cylirb drical,passage,F and; is pressed down by the V actidnfof s sprihg H,acting against a shoulder"Gfiand,against a nut I, crowing into the enlarged upper end F of :thigonduit The, ia'wer end" of the regulating s 'nd'le pr valve G is reduced in diameter, as i icated at g,

, so that when the spindle rises under the pressure of steam entering the passage F at f" =wa ter will flow in at'fand-passing down through the passage F enter the boiler atf As shown, the spindleiG-"has a longitudinal 2o passage G formed "in it closed at top by a valve G, which is's norinallyl-pressed toits seatjby'aspring J, acting against a perforated nut K, screwing into the enlarged up- 7 'per-endG of the spindle G. The nut Iis" also perlforated, as shown, as is also the bindlngand'coveringnutL, and in case the steampressure in the boiler exceeds thedetermined amount regulated by the tension of the spring J the valve G will-open, serving as a safetyvalve to permit the escape of steam from the steam-box. In the present construction the pipe Frequires a supply or head ofwater in excess of the normal steam-pressure in the boiler; but itis obvious'that the boiler may .5 be supplied with water by any convenient means. The steam from the steam-box D passes offthrough the channel F and into the conduit M, upon the end of which is secured, by the clamping-nut O, the oil-spraye ing fixture, (indicated at T.) In the design shown this oil-spraying device is of a novel and 'eflicient construction, comprising a casing N, having a receiving-chamber N for the impellin'g fijuid, a conical bore N 2 opening at 5 the rear, a block fitted to the casing and the casing having a chamber N at its front end with an orifice N, through which the impelling-jet issues. The casing N is=also providedwith an exhaust-passage N and with one-or more channels N communicating with the receiving-chamber N and running back through the casing to the rear end thereof, as"sli'own, and at the extreme rear end of the casing N it is threaded, as indi- 5 5 cated at N P is the plug, fitting in the conical bearing ,of the casing N and formed with a central 1on gitudinal perforation P to receive the oil-con-- duit,'herein after to be described. Near the front end the plug'P is formcd with a recess I and is provided with a passage P ,,leading intothis recessed portion and adapted to communicate with the receiving-chamber N of the casing N. Near the rear end of the plug it ischambered, as indicated at P, to receive packingi'anditis in in y preferred form of constructijonprovi'de'd with a peripheral longitudinal passage 1?, extending from a point where it can be brought to registry with the exhaustport N backto the rear ofthe plug. Aha'ndle P extends out from the side of the plug P and through a slot N in the casing N. The casing is furnished with an end piece Q,which is threaded, as indicated at Q, so as to screw upon the casing N, and is formed so as to pro-. vide the chamberQ in the rear of the plug P, and into which open the channels N ot the grooge P Extending from-the centerof the end piece Q is thec'onduit or oil-delivery pipe Qflwhich extends through the perforation P of the plug P and through the chamber N until it registers with the orifice N". The extreme end of the conduit Q is, asshown, made solid, excepting for oil and steam passages Q and Q leading through its'en'd Q The steamchannel Q leadsthrough the center of the end Q and receives'steam fromthe chamber N through a transverse passage Q An an'-- nular channel is, formed betweenthe walls of the orifice N and the end Q of the oil-conduit, and the steam issues therefrom and also throughthe central channel Q The rear end piece-Q. is secured,as indicated, to an oil-pipe S, R indicating 'a strainer which may be conveniently used to prevent the entrance of dirt into the pipe Q.

It will be noticed that by the construction described the steam will pass freely through the passages N into the chamber Q and act to press the plug P firmly to itsseat. As the pressure against the end of the plug acts against a smaller surface, the steam-supply is cut ofland admitted to the spraying device at will by turning the plug P, which maybe conveniently done by meansofthe handle I; but, irrespective of the position of the plug, there is, it will be observed, always steampressure in the chamber Q. By providing the longitudinal peripheral groove P, I can by moving the cock to one position throw the chamber Q into direct commiinicationwiththe exhaust-passage'N whichen'ables me' to observe the steam-pressure existing in' the boiler, this indication beingoi'course cut off when the plug is turned to admitsteanr'directly to the spraying-fixture. It

' The arrangement of the ("ill-spray ing'fixturein front ofand at some distance away from the receiving-nozzle,'the specific construction.

of the end Q of the oil-pipe, and the general construction by which the oil-jet is made to' converge after leaving the nozzle and then di-v. verge in passing into the receiving-nozzle form the subject-matter of my former application, filed May'5, 1896,'Serial No. 590,371,

and are therefore not claimed-in the present application.

It will of course be understood that my device as illustrated can be varied in construction within considerable limits without departure from the spirit of my invention, and

I do not, therefore, wish to be considered as Having. now described 'limitingmyselfto-the specific details of con struction' except where they are specifically referred to in the claims.v

myinventiom'what I claim as new', and desire to. secure by Letters '1- Patent, is

-1 An oil-sprayingdevice'comprisingrthe "receiving-nozzle "Ban'rd the steam-box D at-- ta'ched rigidly together and having the steaming-tubes E extended from the steam-box in I front or'and above the no'zzle,and an oil-spray i ing fixture supported on the steam-box in line With the nozzle, and in communication 'with the upperpart of thes'team-box, substantially Is as herein set forth. 1 1 I 1 2. on, with a furnace having i. I he combi ati front late with opening formed therein for the in action of oil-spray, of the spray receiv- 'in'gnbzzle B= inserted in .such opening, the

steam-box D formed integral with the nozzle B andl-supported outside of the furnace, an extension of. the steam-box (as the steamingtubes E) lying in front of and above the noz- {zle within; the furnace, and an oil-spraying fixture connected with the bottom of the steam-box by pipe M and communicating with the upper part'of the steam-box by-pas-' sagewithin the'same,the Wholearrangedand operated asherein set'forth.

' the injection of oil-spray, of the spray-receiving nozzle B inserted in such opening, the

I steam-box D formed integral with the nozzle B and supported outside of the furnace,'an .extension of the steam-box (as the steamingtubes E) lying in froiit of and above the nozthe upper part of the steambox,'and the pas having the c nverging 'portionjb upon its zle within the furnace, an oil-sprayinglfixtureconnected with the bottom ofthe steam-box the passage F connecting the pipe M- with sage F connecting the lower .part of-the I steam-box' with the feed-water passage F the 1 herein set-forth.

whole arranged and operated substantially as I 4. The combination, with af urnace having "front-plate with. opening formed therein for theinjection of oil-spray, of the spray-receiving nozzle B i sorted: in such opening, and

"outer end andthe diverging portion'b' upon its inner end with the converging air-pas tended into the furnace, and with the spraysages B entering around 'the margin of the portion b, and opening into the contracted portion of the nozzle, such nozzle being combined with the steam-box D and tubes E ex- "'ing -fixture supported upon the steam-box in line with the nozzle, the Whole arranged and operated substantially as herein setfforth. I

" I 5. An oil-sprayingnozzle having'an exter- N and lateral passages N and N for the ad- 'missi o n and exhaust of steam, an oil-conduit in the center of the casing forming an annunal casing provided with a delivery-opening go; 3. I The combination, with a furnace having front plate with opening formed therein for by, pipe M, and the double conduit F having.

, lar steam-passage within the delivery-opening N and having within the same the oil-pas sages Q and the steam-channels Q and Q, I

and a plug rotatable within the casing to supply steam around the oil-conduit, or to discharge it from the exhaust-opening N, as and for the purpose set forth.

-6." An' oil-spraying nozzle having an outer casing N provided with a de1ivery-opening N conical open ended seat N receiving chamber N and passage or passages N leadingtrorn chamber N to the chamber Q in the .rear of. the casing in combinationw'ith the conical plugP having passage P? adapted to register with chamber N and lead the impel-- ling fluid into chamber N formed in front of I casing N, said plug P having also a central longitudinal perforationfP and the-head Q adapted to be securedto the end of casing- N- N leading from chamber N to the chamber.

Q in the rear of the casing in combination with the conical plug P having passage P adapted to register with chamber N and lead the impelling fluid into chamber N formed.

jn the front of easing Nsa'id plug P having also acentral longitudinal perforation P and handle P extending through slot Nfi-and the head .6} adapted to'be secured to the end of casing N and to form a chamber Q in the rear of plugP, said head having attached to itthe oil-conduit Q adapted to extend through the perforation -P of the plug and into the I orifice N of the casing. 8. An oil-spraying nozzle having an outer casing N provided with a delivery-opening IN conical open-ended seat N receivingchamber N, exhaust-port N slot N and passage or passages N leading from chamber v N to the chamber Q? in the rear of the easing in combination with the conical plug P having passage P adaptedto register with chamber N and lead the impelli'ng fluid into chamber N formed in the front of casing N,

said plug P having also a central longitudinal' perforation P peripheral longitudinal I slot P and handle .P extending through slot N and the head Q adapted to be secured to the end-of casingN and to form a cham- 1 her Q in the rear of plug P said head having attached to it the oil-conduit Q adapted to extend through the perforation P of the plug and into the orifice N of th'e'casing;

Witnesses? J CHAS. W. .A EM m' Y H. A. ANpn s0 N.-

. THOMAS isnownni j 

